Potterton Suprima 60 HE Installation And Service Instructions Manual

Brand: Potterton

Model: Suprima 60 HE

Category: Water heaters & boilers

Type: Installation And Service Instructions Manual

This manual is also suitable for

See inside cover for models covered by these instructions

Installation & Service Instructions

Suprima 30 - 80

Wall Mounted Fan Assisted

Balanced Flue Gas Boilers

THE GAS SAFETY (INSTALLATION AND USE) REGULATIONS 1994. (as amended)

‘‘ In your own interest, and that of safety, it is law that all gas appliances are installed by competent persons,

in accordance with the above regulations. Failure to install appliances correctly could lead to prosecution.’’

Installation must be in accordance with the Installation & Service Instructions and the rules in force.

LEAVE THESE INSTRUCTIONS WITH THE USER FOR USE ON FUTURE CALLS

For Use With Natural Gas

(G20) Only At 20mbar

For Use in GB & IE

IMPORTANT

PLEASE READ THIS BOOK

BEFORE INSTALLING,

OPERATING OR SERVICING

THIS BOILER.

Contents

Technical Data ............................................................... 3

Introduction.................................................................... 4

1. Installation Requirements......................................... 4

1.1 Health & Safety Information............................... 4

1.2 Codes of Practice............................................... 4

1.3 Gas Supply......................................................... 5

1.4 Electricity Supply................................................ 5

1.5 Location of Boiler ............................................... 5

1.6 Air Supply........................................................... 7

1.7 Flue Systems ..................................................... 7

1.8 Flue Terminal Location....................................... 8

1.9 The System........................................................ 8

Flue Kits......................................................................12

System and Other Kits................................................14

2. Installation.................................................................. 16

2.1 Unpack & Prepare the Boiler.............................. 16

2.2 Install the Flue.................................................... 16

2.3 Connect the Power Supply Cable...................... 18

2.4 Install the Optional Programmer........................ 19

2.5 Connect the Gas Supply.................................... 19

2.6 Connect the Water Supply................................. 20

The models covered by these instructions are:-

Suprima 30 - G.C. No. 41 607 75

Suprima 40 - G.C. No. 41 607 76

Suprima 50 - G.C. No. 41 607 77

Suprima 60 - G.C. No. 41 607 78

Suprima 70 - G.C. No. 41 607 79

Suprima 80 - G.C. No. 41 607 80

The boiler model and serial number are given on the boiler

data label which is located on the right hand side of the

chassis and visible after opening the controls door.

3. Commissioning........................................................21

3.1 Commission the Boiler........................................22

3.2 Final Adjustments ...............................................23

3.3 Instruct the User..................................................23

3.4 Advise the User...................................................23

4. To Service the Boiler & Component

Replacement ............................................................24

4.1 General Access...................................................24

4.2 To Service the Boiler...........................................25

4.3 Component Replacement...................................25

4.3.1 Electronic Control Board.........................26

4.3.2 Air Pressure Switch................................25

4.3.3 Electrode................................................ 26

4.3.4 Burner.....................................................27

4.3.5 Injector.................................................... 27

4.3.6 Combustion Chamber Insulation............27

4.3.7 Gas Valve............................................... 28

4.3.8 Fan & Flue Hood.................................... 29

4.3.9 Temperature Sensor...............................30

4.3.10 Overheat Thermostat.............................. 30

4.3.11 Heat Exchanger......................................31

5. Functional Wiring Diagram.....................................32

6. Wiring Diagrams......................................................33

7. Fault Finding ............................................................34

8. Short List of Spares.................................................36

Technical Data - Page 3

Nominal Boiler Ratings

Boiler

models Output Input Burner setting pressure Gas Rate Injector Size

kW Btu/h kW Btu/h mbar in wg m³/h ft³/h mm dia.

5.5 19 000 7.3 25 000 4.1 1.65 0.70 24.7

30 2.8

8.8 30 000 11.0 37 500 9.3 3.70 1.05 37.1

8.5 29 000 11.0 37 500 6.1 2.45 1.05 37.1

40 3.1

11.7 40 000 14.7 50 000 11.2 4.50 1.40 49.3

11.4 39 000 14.8 50 500 6.7 2.65 1.42 50.1

50 3.5

14.7 50 000 18.3 62 500 10.3 4.10 1.75 61.8

14.4 49 000 18.6 63 500 8.6 3.45 1.78 62.9

60 3.7

17.6 60 000 22.0 75 000 12.2 4.90 2.10 74.2

17.3 59 000 22.0 75 000 9.6 3.85 2.10 74.2

70 3.9

20.5 70 000 25.6 87 500 13.4 5.35 2.45 86.4

20.1 68 500 25.6 87 500 10.7 4.28 2.45 86.4

80 4.1

23.4 80 000 29.3 100 000 13.9 5.56 2.80 98.7

Maximum Working Head 30.5m (100 ft)

Minimum Working Head 150mm (6 in)

Gas Supply Pressure 20mbar

Gas Supply Connection Rc. ½ (½ in BSP Female)

Maximum Flow Temperature 82ºC

Flow/Return Connections 22 mm Copper

Water Content 1.6 litres (0.37 gal) - 30, 40, 50 & 60 Models

2.1 litres (0.46 gal) - 70 & 80 Model

Appliance Lift Weight 26.0 kg (57.3 lbs) - 30, 40, 50 & 60 Models

30.2 kg (66.6 lbs) - 70 & 80 Model

Appliance Weight Installed - Dry 32.0 kg (70.0 lbs) - 30, 40, 50 & 60 Models

35.4 kg (78.1 lbs) - 70 & 80 Model

Electricity Supply 230v ~ 50Hz Fused at 3A

Internal Fuse Type 3.15AT

Power Consumption 80 watts (excluding pump)

Classifications CAT 12H

C12, C32 & C71 (C71 30 - 60 models only)

IP20

SAFETY, PERFORMANCE & QUALITY

Suprima boilers have been assessed by a Government appointed Notified Body and shown to meet the

‘Essential Requirements’ of the European Gas Appliance Directive.

The Directive lays down requirements for the safety and efficiency of the appliance, together with its

design, construction, and use of materials.

It also requires the production process to be covered by an approved and monitored system of quality

assurance.

Introduction - Page 4

Gas Safety (Installation & Use) Regulations 1994

(As Amended).

This appliance must be installed and serviced by a

competent person, in accordance with the above regulations.

In the UK 'Corgi' Registered Installers (including the regions

of British Gas Plc) undertake to work to a safe and

satisfactory standard.

Failure to install appliances correctly could lead to

prosecution.

It is in your own interest, and that of safety, to ensure that

the regulations are complied with.

Suprima boilers are fully automatically controlled, wall

mounted, fan powered, balanced flue appliances using a

cast iron heat exchanger and are available in outputs

ranging from 5.5 - 23.4 kW (19,000 - 80,000 Btu/h)

The boilers are designed for use on fully pumped open

vented or sealed water systems with an indirect hot water

cylinder.

THEY MUST NOT BE CONNECTED TO A DIRECT

CYLINDER.

The boilers are for use on Natural Gas (G20) only.

Samples of the Potterton Suprima gas boilers have been

examined by British Gas Plc, a United Kingdom Notified

Body. The range is certified to comply with the essential

requirements of the Gas Appliance Directive 90/396/EEC,

the Low Voltage Directive 72/23/EEC and shows compliance

with the Electro Magnetic Compatibility Directive

89/336/EEC and are therefore permitted to carry the CE

Mark.

Delivery & Kits Available

The unit is delivered in two packages (1) the boiler with

fittings and (2) the flue/terminal assembly. See pages 12 &

13 for flue options.

Various kits are available for the Suprima range of boilers,

see pages 14 & 15.

1. Installation Requirements - Page 4

1.1 Health and Safety Information for the

Installer and Service Engineer

Under the Consumer Protection Act 1987 and Section 6 of

the Health and Safety at Work Act 1974, we are required to

provide information on substances hazardous to health.

Small quantities of adhesives and sealants used in the

product are cured and present no known hazards.

The following substances are also present.

Insulation and Seals

Material - Man Made Mineral Fibre.

Description - Boards, Ropes, Gaskets.

Known Hazards - Some people can suffer reddening and

itching of the skin. Fibre entry into the eye will cause

foreign body irritation which can cause severe irritation

to people wearing contact lenses. Irritation to respiratory

tract.

Precautions - Dust goggles will protect eyes. People with a

history of skin complaints may be particularly

susceptible to irritation. High dust levels are only likely to

arise following harsh abrasion. In general, normal

handling and use will not present high risk, follow good

hygiene practices, wash hands before, touching eyes,

consuming food, drinking or using the toilet.

First Aid - Medical attention must be sought following eye

contact or prolonged reddening of the skin.

1.2 Codes of Practice

The boiler must be installed in accordance with: The Gas

Safety (Installation and Use) Regulations 1994 (As

Amended) and the current issue of:-

The Building Regulations, Building Standards (Scotland)

Regulations, Local Building Regulations, Model and local

Water Undertaking Bye-laws, IEE Wiring Regulations and

Health & Safety Document No. 635 "The Electrician At Work

Regulations 1989".

Installation Requirements - Page 5

1.3 Gas Supply

The meter and supply pipes must be capable of delivering this quantity of gas in addition to the demand from any other

appliances in the house and must be governed at the meter.

The complete installation must be tested for gas soundness and purged as described in BS6891.

1.4 Electricity Supply

230V ~ 50Hz via a fused double pole switch with a contact separation of at least 3 mm in both poles adjacent to the boiler.

Power consumption is approximately 150W. There must be only one common isolator for the boiler and its control system

and it must provide complete electrical isolation.

Fuse the supply at 3 A. The minimum requirement for the power supply cable is that it should be a PVC sheathed cord at

least 0.75 mm

(24 x 0.2 mm) (code designation HO5 VV-F or HO5 VVH2-F) as specified in table 16 of BS6500:1984.

All wiring external to the boiler shall comply with the latest IEE Wiring Regulations, and any local regulations which apply.

WARNING: THIS APPLIANCE MUST BE EARTHED.

In the event of an electrical fault after installation of the boiler, preliminary electrical systems checks must be carried out i.e.

Earth Continuity, Short Circuit, Polarity and Resistance to Earth.

1.5 Location of Boiler

The boiler is not suitable for external installation unless it is suitably protected.

If the sealed system kit (Part No. 238027) is being used, this should be installed first. See instructions supplied with kit.

The boiler must be installed so that the flue terminal is exposed to the external air. It is important that the position of the

terminal allows the free passage of air across it at all times.

The boiler must be mounted on a flat wall which is sufficiently robust to take the weight of the boiler.

The boiler is suitable for installation to a combustible wall e.g. wood cladding, provided that the flue duct is not closer than

25 mm to combustible material. A metal sleeve should be installed to surround the flue duct to provide a 25mm annular

space. Further guidance is given in BS5440:1:1990, sub-clauses 3.3 and 4.2.5.

If the boiler is to be installed in a timber framed building it should be fitted in accordance with the British Gas publication-

Part 19 - Building and Kitchen Work. If in doubt advice must be sought from Potterton Myson.

The boiler may be installed in any room, although particular attention is drawn to the requirements of the current IEE Wiring

Regulations and, in Scotland, the electrical provisions of the Building Standards applicable in Scotland with respect to the

installation of the boiler in a room containing a bath or shower.

Where a room-sealed appliance is installed in a room containing a bath or shower, any electrical switch or appliance control,

utilising mains electricity should be so situated that it cannot be touched by a person using the bath or shower.

Where the installation of the boiler will be in an unusual position, special procedures may be necessary and BS6798 and

BS5546 give detailed guidance on this aspect.

A cupboard or compartment used to enclose the boiler must be designed and constructed specifically for this purpose. An

existing cupboard or compartment may be used provided that it is modified for the purpose. Details of essential features of

cupboard/compartment design including airing cupboard installations are given in BS6798 and BS5546 and should be

complied with.

The boiler requires only the clearances shown on Page 6, after installation.

Installation Requirements - Page 6

Installation Requirements - Page 7

1.6 Air Supply

The air requirements must meet BS 5440 Part 2.

The room in which the boiler is installed does not require a purpose provided air vent.

If the boiler is installed in a cupboard or compartment, permanent air vents are required in the cupboard or compartment,

one at high level and one at low level, either direct to the outside air or to a room. Both high level and low level air vents

must communicate with the same room or must be on the same wall to outside air. Both the high level and low level vent

must each have a free area as stated below. The free area of each vent may be halved if the ventilation is provided directly

from outside.

Models: 30: 99 cm² 40: 133 cm² 50: 169 cm²

60: 198 cm² 70: 231 cm² 80: 264 cm²

If the boiler is installed in a cupboard or compartment with a door, allow at least 15 mm clearance between the front of the

boiler and the door for air movement.

1.7 Flue Systems

Horizontal

The flue/terminal assembly supplied is suitable for a wall thickness of between 150mm and 400mm.

A flue/terminal assembly suitable for a wall thickness of up to 600mm is also available.

Both the flue/terminal assemblies are telescopic and the minimum lengths (150 mm/6 in) are achieved by cutting.

1m flue extensions are available. Under no circumstances should the total flue length exceed - 3.4m 30 - 70 models.

- 2.4m 80 models.

Vertical

1. Twin Tube system.

30 - 80 models.

Maximum actual length 7m (7 extensions)

Maximum equivalent resistance = 7m

2. Vertical Concentric system.

30 - 70 models - Maximum actual length 3.4m, equivalent resistance = 3.4m.

80 models - Maximum actual length 2.4m, equivalent resistance = 2.4m.

Vertex

The maximum primary flue length is 3.4m.

The maximum secondary flue length is: 30 model 5m

40 model 5.5m

50 & 60 models 6m

Note: The flue lengths quoted refer to straight lengths. For the effects of bends and offsets see Section 2.2 'Install

the Flue' or the appropriate flue instructions.

Installation Requirements - Page 8

1.8 Flue Terminal Location

If a horizontal flue is sited less than 2m above a balcony, above ground, or above a flat roof to which people have access, a

suitable terminal guard must be fitted. This serves two purposes, to protect the terminal against damage or interference and to

protect passers-by. A terminal guard is available (Sales Code: PTERMGUARDEF).

Note: Where a flue terminal is installed less than 1 metre from a plastic, or painted gutter, or 500mm from painted eaves, an

aluminium shield 1 metre long, should be fitted to the underside of the gutter or painted surface. A suitable wall plate should be

fitted to the painted wall surface of a mobile home.

IMPORTANT: It is absolutely ESSENTIAL, to ensure that products of combustion discharging from the terminal cannot re-enter the

building, or any other adjacent building, through ventilators, windows, doors, natural air infiltration, or forced ventilation/air

conditioning. If products of combustion are found to be re-entering any building, the appliance MUST be turned OFF

IMMEDIATELY.

POSITION MIN. DISTANCE mm

TO EDGE OF TERMINAL

HORIZONTAL FLUES

Models

DIRECTLY BELOW AN OPENABLE

WINDOW, AIR VENT, OR ANY OTHER

VENTILATION OPENING

BELOW GUTTER, DRAIN/SOIL PIPE

BELOW EAVES

BELOW A BALCONY/CARPORT ROOF

FROM VERTICAL DRAIN PIPES AND

SOIL PIPES

FROM INTERNAL OR EXTERNAL CORNERS

ABOVE ADJACENT GROUND OR BALCONY

LEVEL

FROM A SURFACE FACING THE TERMINAL

FACING TERMINALS

FROM OPENING (DOOR/WINDOW IN

CARPORT INTO DWELLING

VERTICALLY FROM A TERMINAL ON THE

SAME WALL

HORIZONTALLY FROM A TERMINAL ON

THE SAME WALL

VERTICAL FLUES

ABOVE ROOF LEVEL (TO BASE OF TERMINAL)

FROM ADJACENT WALL TO FLUE

FROM INTERNAL CORNER TO FLUE

BELOW EAVES OR BALCONY

FROM FACING TERMINAL

30 - 60

300

600

1,200

1,500

300

210

230

600

1,200

70 - 80

300

100

300

600

1,200

1,500

300

210

230

600

1,200

1.9 The System

The boiler must be used on Indirect Fully Pumped systems only,

which may be sealed or open vented.

The system should be designed so that the maximum static

head does not exceed 30.5m (100ft) and a minimum of 150mm

(6in).

On all systems the pump live connection should be wired to the

boiler terminal block, it will then be controlled by the pump over-

run. This will ensure that the pump will continue to run after

boiler shut down if the water temperature is high, thus

preventing nuisance operation of the overheat thermostat.

It is important that where electrically operated zone valves are

used the boiler is wired so it does not cycle when the zone

valves are closed. Also, systems fitted with controls that close

both hot water and central heating circuits while the boiler is still

hot, must be fitted with a by-pass circuit to dissipate the

residual heat from within the boiler.

If a three port valve is used as shown in Fig. 3 a by-pass is not

necessary since one circuit is always open.

Where a pair of two port valves are used, a by-pass is

necessary. The total length of the by-pass circuit taken from the

boiler connections should be greater than 4 metres of 22mm

pipe. It should be fitted with a lockshield valve and be adjusted

to maintain a minimum flow through the boiler of 4.5litres/min (1

gal/min).

Installation Requirements - Page 9

Systems fitted with controls which allow the boiler to operate

when both the hot water and central heating circuits are

closed i.e. mechanically operated thermostatic control

valves, must be fitted with a by-pass circuit of:-

1. A minimum length of bypass of 2m of 22mm dia. Pipe.

2. Maintaining a minimum water flow rate through the

boiler of 9 litres/min (2 gal/min).

A suggested method of meeting these requirements by using

a bathroom radiator fitted with two lockshield valves is

shown in Fig. 3.

Additional system information can be found in the Control

Systems, pipework and Wiring Guide.

Drain off taps should be fitted in the pipework close to the

boiler and in the low points of the system.

Note: Although the system can be emptied using the drain

off taps installed in the pipework around the system, to

empty the boiler it is necessary to remove the drain off screw

positioned on the heat exchanger.

Sealed Systems

Note: If the sealed system kit (Part No. 238027) is Not being

used the installation must comply with the following

requirements.

Installation

The installation must comply with the requirements of BS

6798: 1987 and BS 5449: Pt 1. The British Gas publication

"British Gas Specification for Domestic Wet Central Heating

Systems" should also be consulted.

Pressure Relief Valve

A non-adjustable spring-loaded pressure relief valve, preset

to operate at 3 bar (45lbf/in

) shall be used. It must comply

with BS 6759: Pt 1. and include a manual testing device. It

shall be positioned in the flow pipe either horizontally or

vertically upwards and close to the boiler. No shut-off valves

are to be placed between the boiler and the safety valve.

The valve should be installed with a discharge pipe which

permits the safe discharge of steam and hot water such that

no hazard to persons or damage to electrical components is

caused.

Pressure Gauge

A pressure gauge incorporating a fill pressure indicator,

covering the range 0 - 4 bar (60 lbf/in

) shall be fitted to the

system. It should be connected to the system, preferably at

the same point as the expansion vessel. Its location should

be visible from the filling point.

Expansion Vessel

A diaphragm type expansion vessel to BS 4814: Pt 1. Shall

be fitted close to the inlet side of the pump. The connecting

pipework should not be less than 15mm. Pipework

connecting the expansion vessel should not incorporate

valves of any sort. Methods of supporting the vessel are

supplied by the vessel manufacturer. The nitrogen or air

charge pressure of the expansion vessel shall not be less

than the hydrostatic head, (height of the top point of the

system above the expansion vessel). To size the

Expansion vessel it is first necessary to calculate the volume

of water in the system in litres. The following volumes may

be used as a conservative guide to calculating the system

volume.

Boiler Heat Exchanger: 2.1 litres

Small Bore Pipework: 1 litre per kW of system

output

Micro Bore Pipework: 7 litres

Steel Panel Radiators: 8 litres per kW of system

output

Low Water Capacity Radiators: 2 litres per kW of system

output

Hot Water Cylinder: 2 litres

If the system is extended, the expansion vessel volume may

have to be increased unless provision has been made for

extension. Where a vessel of the calculated size is not

available, the next available larger size should be used. The

boiler flow temperature is controlled at approximately 82°C.

The vessel size can now be determined from the information

in Table 1 where V = System volume in litres.

Vessel Charge Pressure (bar)

Initial System Pressure (bar)

Expansion Vessel Volume (litres)

0.5

1.0

V x 0.11

1.5

1.0

V x 0.087

Table 1.

cylinder fitted with an immersion calorifier suitable for

operating at a gauge pressure of 0.3 bar (5 lbf/in

) in excess

of safety valve setting. Single feed indirect cylinders are not

suitable for sealed systems.

Method of Make-up

Provision shall be made for replacing water loss from the

system either:-

i) from a make-up vessel or tank mounted in a position

higher than the top point of the system, and

connected through a non-return valve to the system

on the return side of the hot water cylinder or the

return side of all heat emitters.

ii) where access to a make-up vessel would be difficult

by using the mains top up method or a remote

automatic pressurisation and make-up unit as shown

in Figs. 5 & 6.

Mains Connection

There shall be no connection to the mains water supply or to

the water storage tank which supplies domestic hot water

even though a non-return valve, without the approval of the

Local Water Authority.

Filling Point

The system shall be fitted with a filling point at low level

which incorporates a stop valve to BS 1010 and a double

check valve (approved by the National Water Council) to be

fitted in this order from the system mains, see Fig. 5.

Installation Requirements - Page 10

Fig 3

Fig 4

Installation Requirements - Page 11

Circulation Pump Selection

The resistance through the heat exchanger when operating

with a water flow rate producing an 11°C temperature rise at

maximum boiler output are shown in the table. If other

controls such as three position valves are used in the

system, the resistance through them, quoted in their

manufacturers literature must be taken into account. The

pump may be fitted on either the flow or return and MUST be

wired directly to the boiler terminal block. It must be fitted

with two isolating valves which are positioned as close to the

pump as possible. Closing of any valve must always leave

the open vent unobstructed.

Water Flow Rate Boiler Resistance

I/min

11.5

15.2

19.2

22.9

26.7

30.5

mbar

17.5

36.1

44.9

59.5

80.9

105.3

0.18

0.37

0.46

0.61

0.83

1.08

Flue Kits - Page 12

Optional Extras - Flues - Page 13

Installation instructions included as necessary with each kit.

System and Other Kits - Page 14

System and other Kits - Page 15

2. Installation - Page 16

2.1 Unpack & Prepare the Boiler

These instructions assume you have decided on

where the boiler will be located and the type of flue

system to be used.

1. Carefully unpack the boiler.

2. Do not discard any packaging until all the items

are accounted for.

3. Open the controls cover, remove the securing

screw and washer, pull off the controls cover

and put safely aside.

4. Remove two screws and washers, remove the

white front case and put safely aside.

5. Place the mounting template in the proposed

boiler position ensuring that it is level. Minimum

clearances are accounted for on the template.

6. Mark the flue hole, remove the template and

carefully cut the flue hole through the wall. See

fig.8 for Side Flue.

7. Place the mounting template centrally over the

hole (ensure the template is level) and mark out

the two screw fixing hole positions.

8. Remove the template and drill the two holes

using a 7mm drill.

9. Insert wall plugs and secure the mounting

bracket to the wall using two No. 12 x 2"

woodscrews.

10. Lift the boiler onto the mounting bracket, slide

both boiler securing clips over the mounting

bracket (this prevents the boiler from being

accidently lifted off the the mounting bracket),

see fig.7.

11. The third screw provided is also to prevent the

boiler from being lifted off the mounting bracket,

once the boiler is mounted on the wall. This

screw can be replaced by an anti-theft kit see

note below.

Note: There is provision for an anti-theft securing

point (sales code: SUPKITP) which may be used if

required.

2.2 Install the Flue

Maximum flue lengths are as follows:

30 - 70 Models - 3.4M

80 Model - 2.4M

These instructions are for rear and side flue

applications.

Rear Flue

1. Measure the wall thickness and add 66mm (or

106mm for installations using the System Boiler or

Stand Off Kits).

Side Flue

1. Determine the X dimension (wall thickness +

distance to boiler centreline).

For both Rear & Side Flues

2. Extend the telescopic flue to the required length,

minimum 20mm overlap.

3. Drill through the pilot hole and secure with self

tapping screw.

Installation - Page 17

4. Wrap tape around the joint on the outer duct

to seal the flue, slide drip ring into a position

to coincide with the air gap in the wall (cavity

wall).

5. Slide the flue through the hole until it stops on

the pin.

6. The boiler is supplied with the flue elbow set

to the rear. For side outlet slacken the

screws and turn the elbow to the required

position and re-tighten screws. Ensure that

the seals are still correctly located.

7. Hang the boiler onto the mounting bracket.

To square the boiler to the wall adjust the

boiler alignment screws on the back panel of

the boiler.

8. Slide the flue back until it engages in the

elbow bayonet connection, twist anti-

clockwise to lock.

9. Drill through pilot hole and lock flue in position

with the self tapping screw provided.

10 Make good the wall around the flue, both

outside and inside.

For extension kits refer to page 12 & 13. If a

Horizontal Extension is required this MUST be

combined with a Standard Flue as shown below in

the Maximum Flue Length Guide.

Installation - Page 18

2.3 Connect the Power S

controls panel. Feed the cables up and over

, through the clamp

wires, brown to L and blue to N and

Note:

cable, ensure that the length of the earth wire

is such, that if the power supply cable pulls

wires become taut before the earth wire.

2. ted through

the hole in the base of the rear cover, through

terminal connection.

the terminal block and the cable clamp, then

Ensure sufficient slack is available to the

cable clamps to allow the control panel to

panel.

section 2.4 performing steps 4 and 5

below.

Secure the controls assembly to the chassis

using the screw previously removed.

Carry out preliminary electrical system checks

i.e. Earth Continuity, Short Circuit, Polarity

Frost Thermostat:

If a Frost Thermostat is to be fitted, the

external to the boiler.

The Frost Thermostat should be connected

the supply cable to the boiler.

Do not switch on the electricity supply at

2.4 Install the Optional Programmer

Carefully remove the blanking panel from the facia and

2. Remove the two plastic sleeves and connect the

circuit board.

immediately below the programmer using the two

screws provided.

2.5 Connect the Gas Supply

supply using a suitable adaptor to the gas cock.

Important:

assembled to the gas cock.

The pipe diameter required will depend on the boiler model

supply pipe is selected in accordance with BS 6891 so that

an adequate gas supply to the boiler is provided.

Installation - Page 20

2.6 Connect the Water System

1. Connect system pipework to the boiler,

compression fittings should be used.

Note: Drain off taps should be installed at the

lowest points in the system.

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